Picasaweb hidden size

I was never satisfied with the size options range of embedded images at picasaweb - 144, 288, 400, 800. I needed something in the middle between 400 and 800. I don’t know, how I didn’t notice it before and why interface doesn’t show it in the embedded options, but there is also 640px image in “s640” folder. So when you embed the image by copying text from Embed image text field you need to replace for ex. s144 with s640. In general, I am pretty happy with Picasa - fast and easy upload with picasa.app. However, their resized images are still pretty bad compared to other services. But as long as I have my low-quality camera this is not a big issue for me. Besides, it leaves original image untouched, so if I need a good quality I upload image with a desired size.

Update: thanks to stansult, he found a lot of other sizes, actually:

0 (original image), 32, 48, 64, 72, 104, 144, 150, 160, 200, 288, 320, 400, 512, 576, 640, 720, 800, 912, 1024, 1152, 1280, 1440, 1600 (this was original size in his experiments)